Add project files.

Author: Sébastien Geiser

CodingSeb.Converters.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.29519.87
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CodingSeb.Converters", "CodingSeb.Converters\CodingSeb.Converters.csproj", "{C4C26558-CCB1-41DD-AE1B-DDBCBD8B0CDE}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{C4C26558-CCB1-41DD-AE1B-DDBCBD8B0CDE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C4C26558-CCB1-41DD-AE1B-DDBCBD8B0CDE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C4C26558-CCB1-41DD-AE1B-DDBCBD8B0CDE}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C4C26558-CCB1-41DD-AE1B-DDBCBD8B0CDE}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {1C06BADE-A75F-4E4B-AF1B-84C345380D8E}
+	EndGlobalSection
+EndGlobal

CodingSeb.Converters/CodingSeb.Converters.csproj

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+<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.0;net4.7</TargetFramework>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+</Project>